Lufi - Encrypted temporary file upload service
Disroot's Upload service is a file hosting software, powered by Lufi. It temporarily stores files so you can share them with others using a link. To protect privacy, all the files are encrypted in the browser itself - It means that your files never leave your computer unencrypted. The administrators will not be able to see the content of your file, nor will your network administrator or your ISP. The administrators can only see the file's name, its size and its mimetype (what kind of file it is: video, text, etc).
Source code: https://framagit.org/fiat-tux/hat-softwares/lufi
How does it work?
Drag and drop files in the appropriate area or use the traditional way to browse and select files and the files will be chunked, encrypted and sent to the server. You will get two links per file: a download link, that you give to the people you want to share the file with and a deletion link, allowing you to delete the file when you want. You can see the list of your files by clicking on the "My files" link at the top right of that page.
You don't need to register yourself to upload files.